Time damper mechanism.



. PATENTED MAY 5, '1903. v J. N, GRQGKER.

TIME DAMPER MECHANISM.

I APPLICATION FILED MAY 11,1901.-

N0 MODEL.

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Nrrn STAT S Patented May 5, 1903.

Fries.

ATENT JAMES N. OROOKER, OF SARATOGA SPRINGS, NEW YORK.

TllVlE DAMPER MECHANISM.

SPECIFICATION forming'part of Letters Patent No. 726,87 3, datedMayb, 1903.

Application filed May 11, 1901.

Drafts of a Furnace, of which the following is a specification. 7

My inventionrelates to time damper mechanism; and the object of my invention is to provide an automatic device operated by clockwork for opening and closing the drafts of a furnace at a predetermined time. I attain this object by means of the mechanism. illustrated in the accompanying-drawings, in which- Figure 1 is an elevation with'parts broken away. Fig. 2 is a longitudinal section. Fig. 3 is a detail view showing the meansfor-making and breaking contact between the springlever S and the wheel W. Fig. 4 isa detail view of the clock-face. Fig. 5 is a detail view with parts removed, showing the connection of the spring-lever S, Wheel 0, and hand D, and means of operation by the wheel W when connected with the offset 8 on spring-lever S. Fig. 6 is a plan of the spring-lever S. Fig.7 is a side elevation of spring-lever S. Fig. 8 is a detail perspective view of the cam-shaped hub E. V 7

Similar letters refer to similar parts throughout the several views. 7

I arrange a clock A, having a gear-wheel B, adapted to engage with a gear-wheel O, the wheels B and 0 having an equal number of teeth. The gear-wheel C is mounted upon the shaft 0, which also carries the hand D. Upon the wheel 0, I arrange a cam-shaped hub E, said cam being inclined and havinga cut-away portion, as at 0 Upon the shaft 0 is a pin F, with which the cam-hub E engages, for a purpose to be presently explained. To the rear of the face A, I secure one end of the spring-lever S in any suitable manner, said spring-lever S provided with an opening 10, by means of which it is placedloosely on the shaft 0, and provided atits end opposite that to which it is fastened to the clock-face, with preferably a projecting offset 8, adapted to engage with the pin T on the wheel W. The gear w of the wheel W meshes with the gear Serial No. 59,718. (No model.)

on the wheel V, and the pinion o engages with the gear on the wheel X. To the wheel X is arranged a dog L and ratchet Y. I also arrange a drum Z on the shaft w, carrying the Wheel X, about which I'coil a rope R. The shaft 00 is squared at M, preferably, to fit a key by means of which the rope may be wound on the drum, the wheels being held from revolving during the winding by thespring-lever S engaging with the pin T on the Wheel W. The rope R is wound about shives N and is attached to suitable lever O, engaging with the dampers P P of the furnace F.

In setting the apparatus the supplemental hand D is movedto thehour on its dial at which it is desired the dampers shall be 0perated. This movement of the hand D causes the shaft 0 to be turned and the pin F-on the shaft 0 to ride up the inclined cam-hub E,

thus moving the wheel 0 on its shaft and bringing the oifset s on spring S into engagementwith pin T on wheel W, thus locking the train of gearing and'permitting the shaft 1; to be turned, winding the rope R about the drum Z, opening damper P ahdclosing dam-j per P. The apparatus being set, as the hourhand of the clock-moves the wheel '13 on its shaft will turn, and being in gear with the wheel 0 will cause said wheel to turn, which will bringthecut-awayportion of the cam on its hub in such positiomto permit v.the wheel 0 to be moved by the spring S, thismovement of the spring freeing its offset from the pin T on the wheel W, thus unlocking the'train of gearing, whereupon the weighted lever 0 will fall, closing damper]? and opening damperP.

What I claim as my invention, and desire to secure by Letters Patent, is-

In a damper-operating device the combination with a clock, a train of gears, the drum carried by one of the wheels of said train, the rope, or flexible connection carried by said drum and connected mediately with the dampers of a furnace, a supplementalsetting hand, the shaft 0 upon which it is mounted,

the wheel movable longitudinally' on said shaft, a wheel on the clock-hand. shaft, in gear with the wheel-shaft c, the inclined camhub on the supplemental hand-wheel C having cut-away portion, the pin on the shaft 0 adapted to engage with said inclined cam, the spring-lever attached to the rear of the movement of the hour-hand of the clock,

on the spring-lever from the pin on the wheel of the gear-train, permitting the lever O to drop and close and open the dampers of the furnace.

Signed at Albany, New York, this 8th day of May, 1901.

JAMES N. OROCKER.

Witnesses:

FREDERICK W. CAMERON,

when the spring-lever will assert itself, mov- LOTTIE PRIOR.

in g the wheel a on its shaft and free the offset 

